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from portage.dbapi import dbapi
from portage import cpv_getkey
class fakedbapi(dbapi):
"This is a dbapi to use for the emptytree function. It's empty, but things can be added to it."
def __init__(self, settings=None):
self.cpvdict = {}
self.cpdict = {}
if settings is None:
from portage import settings
self.settings = settings
self._match_cache = {}
def _clear_cache(self):
if self._match_cache:
self._match_cache = {}
def match(self, origdep, use_cache=1):
result = self._match_cache.get(origdep, None)
if result is not None:
return result[:]
result = dbapi.match(self, origdep, use_cache=use_cache)
self._match_cache[origdep] = result
return result[:]
def cpv_exists(self, mycpv):
return self.cpvdict.has_key(mycpv)
def cp_list(self, mycp, use_cache=1):
if not self.cpdict.has_key(mycp):
return []
else:
return self.cpdict[mycp]
def cp_all(self):
returnme=[]
for x in self.cpdict.keys():
returnme.extend(self.cpdict[x])
return returnme
def cpv_all(self):
return self.cpvdict.keys()
def cpv_inject(self, mycpv, metadata=None):
"""Adds a cpv from the list of available packages."""
self._clear_cache()
mycp = cpv_getkey(mycpv)
self.cpvdict[mycpv] = metadata
myslot = None
if metadata:
myslot = metadata.get("SLOT", None)
if myslot and mycp in self.cpdict:
# If necessary, remove another package in the same SLOT.
for cpv in self.cpdict[mycp]:
if mycpv != cpv:
other_metadata = self.cpvdict[cpv]
if other_metadata:
if myslot == other_metadata.get("SLOT", None):
self.cpv_remove(cpv)
break
if mycp not in self.cpdict:
self.cpdict[mycp] = []
if not mycpv in self.cpdict[mycp]:
self.cpdict[mycp].append(mycpv)
def cpv_remove(self,mycpv):
"""Removes a cpv from the list of available packages."""
self._clear_cache()
mycp = cpv_getkey(mycpv)
if self.cpvdict.has_key(mycpv):
del self.cpvdict[mycpv]
if not self.cpdict.has_key(mycp):
return
while mycpv in self.cpdict[mycp]:
del self.cpdict[mycp][self.cpdict[mycp].index(mycpv)]
if not len(self.cpdict[mycp]):
del self.cpdict[mycp]
def aux_get(self, mycpv, wants):
if not self.cpv_exists(mycpv):
raise KeyError(mycpv)
metadata = self.cpvdict[mycpv]
if not metadata:
return ["" for x in wants]
return [metadata.get(x, "") for x in wants]
def aux_update(self, cpv, values):
self._clear_cache()
self.cpvdict[cpv].update(values)
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